Class CalendarDataProvider

java.lang.Object

java.util.spi.LocaleServiceProvider

java.util.spi.CalendarDataProvider

public abstract class CalendarDataProvider extends LocaleServiceProvider

An abstract class for service providers that provide locale-dependent Calendar parameters.

Since:

1.8

See Also:

Constructor Summary

CalendarDataProvider()

Modifier	Constructor	Description
`protected`	Sole constructor.

Method Summary

Modifier and Type	Method	Description
`abstract int`	`getFirstDayOfWeek(Locale locale)`	Returns the first day of a week in the given `locale`.
`abstract int`	`getMinimalDaysInFirstWeek(Locale locale)`	Returns the minimal number of days required in the first week of a year.

Methods declared in class LocaleServiceProvider

getAvailableLocales, isSupportedLocale

Methods declared in class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CalendarDataProvider

protected CalendarDataProvider()

Sole constructor. (For invocation by subclass constructors, typically implicit.)

Method Details

getFirstDayOfWeek

public abstract int getFirstDayOfWeek(Locale locale)

Returns the first day of a week in the given locale. This information is required by Calendar to support operations on the week-related calendar fields.

Parameters:

locale - the desired locale

Returns:

the first day of a week; one of Calendar.SUNDAY .. Calendar.SATURDAY, or 0 if the value isn't available for the locale

Throws:

NullPointerException - if locale is null.

See Also:

getMinimalDaysInFirstWeek

public abstract int getMinimalDaysInFirstWeek(Locale locale)

Returns the minimal number of days required in the first week of a year. This information is required by Calendar to determine the first week of a year. Refer to the description of how Calendar determines the first week.

Parameters:

locale - the desired locale

Returns:

the minimal number of days of the first week, or 0 if the value isn't available for the locale

Throws:

NullPointerException - if locale is null.

See Also:

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https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/util/spi/CalendarDataProvider.html